Little stumped and surprised here. I only have manuals for W124, as well... so perhaps I am missing something.


Trying to get a W210 to start after sitting for a few years. I have taken care of everything else... just assume for now that the only thing left is that I am trying to get fuel to the injectors.


New fuel in tank


Replaced many of the orings on the fuel supply system, specifically on the suction side before the lift pump.


When I pull the fuel hose that comes from the firewall leading to the the fuel heater, I can hold a vacuum there for a long time and no fuel comes through.


maybe a drop. If I wait overnight and pull a vacuum again, I get more... but it stops flowing.


When the tank was empty... I could not hold a vacuum doing a similar procedure.


W.T.F!?


Is there a valve between the tank and the engine on aW210?

EDIT:
I am getting fuel to flow when pulling a vacuum of 20-25 in-hg. That seems excessive.

Anyone know what a typical suction pressure on a w124, w210 or OM606 is to get fuel to flow from their tank?

I would think under 10 in-hg should be sufficient on a low tank.

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